GD 1628

All names: Gaia DR3 6556591593972415488, EC23070-3227, 2MASS J23094764-3210462, Gaia DR2 6556591593972415488, GALEX J230947.6-321045, EC 23070-3227, TIC 218960493, UCAC4 290-225139, GD 1628

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 23 09 47.60 23 09 47.64 (0.04)
Declination -32 10 45.80 -32 10 46.12 (0.03)
Spectral type sdB sdB
Effective temperature [K]
log(g) [cgs]
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.46 (0.07) 0.52 (0.04)
Distance [pc] 2157.03 (339) 1930.87 (153)
Composition
Proper motion (right ascension) [mas/yr] 6.665 (0.2) 6.54 (0.04)
Proper motion (declination) [mas/yr] -5.215 (0.1) -5.257 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.34 (0.02)
V magnitude 15.45 (0)
R magnitude 15.82 (0.6)
I magnitude
J magnitude 15.35 (0.06) 15.35 (0.06)
H magnitude 15.07 (0.1) 15.07 (0.1)
K magnitude 14.97 (0.1) 14.97 (0.1)
u magnitude
g magnitude 15.34 (0.05)
r magnitude 15.64 (0)
i magnitude 15.96 (0.1)
z magnitude
G magnitude 15.43 (0.001) 15.41 (0.003)
BP magnitude 15.29 (0.009)
RP magnitude 15.49 (0.005)
Pan g magnitude 15.83
Pan r magnitude 15.79
Pan i magnitude 15.82 (0.003)
Pan z magnitude 15.96
Pan y magnitude 16.01
E(B-V) 0.010

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.